Tragically, the Phoenix was corrupted into Dark Phoenix by the influence of Mastermind and the Hellfire Club. Jean was transformed into the Black Queen of their inner circle. After shaking Mastermind's control, Phoenix underwent another transformation into the Dark Phoenix. She soared through the universe, where she devoured an entire star and the five-billion inhabitants of one of its planets. She returned to Earth and threatened to kill everyone, but Professor Xavier was able to keep Phoenix under control and helped her will herself back to normal. Scott finally proposed to the Phoenix before they were teleported away by the Shi'ar.
